Vacuum cleaner



Feb. 27, 1940. H. A. JEFFERY .vAUUM CLEANER I Filed Feb. 11. 1957 MEN-rox; HARRY A Jfz'f'f'nnv. "BY

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Patented Feb. 21, i940 UNITED STATES PATENT OFFICE i A. :172mm imagina, ohio i i Application February ll, 1937, Serial No. 125,225

1 Claim.

This invention relates to the art of vacuum cleaners and is especially applicable' to the cleaning of-automobile upholstery as it is adapted to be operated by the air pressure universally found l at `automobile service garages l and service stations.

'I'he object of this invention is to provide a device that is readily portable andV can be connected to and operated by the familiar airpresl0 sure supply at any point for efllciently removing the dirt from automobile 'upholstery andv depositing .the same in a container whichcan be emptied from. time to time. l' A further object is to provide such a device with a sight glass which 1s so arranged that the flow of dirt can be actually seen as it is extracted from the automobile upholstery and discharged through'this device.

Another object is to provide such a device with l an emcient form of baille means for'diverting and to through which the dirt u drawn by the force or the air pressure and deposited in the water within the container. l f

Other objects will appear from the following description and claims when considered together t 85 with the accompanying drawing.

Fig. 1 -is a view, partly in elevation and partly in section, illustrating my complete assembly;

Fig. 2 is a sectional view of the attachment for connecting the means of airpressure and the 40 hose and tool for cleaning; and

Fig. 3 is a view taken on line 8-3 of Fig. 2. It is to be understood that the present form of disclosure is merely for .purposes of illustration and that there may be devised various modiilcations without departing from the spirit ofthe invention as herein described and claimed.

Referring to the accompanying drawing, the container I is adapted to be illleti with water to the level of the pet cock 2 and has the drain t0. plug 8 by which it can be emptied vfrom time to time. This container which can be in the form of a cylindrical galvanized drum or any other suitv able form. has the removable head 4 which is secured in place bythe ring] and lms'any/de-A u sirednmnberofapertu'nel. Therelsaleoawire (ci. 23o-ss) screen "l mounted within the upper part of the container. Apertures 8a may also be provided around the upper part of the container.

Briefly, the purpose of this container is to' receive the dirt-ladened'a'ir from which the dirt, 5 is deposited into the water and the air permitted to escape through the apertures in the toppart. of the container, as will be more fully explained.

Thecenter of the' head! has screw-threaded connection with the upper end ofthe pipe 8.10 which has threaded onto its lower end the conical shield 9 which in turn has attached thereto, as at I0, the conical bame member I i. As will be seen, the lower edges of these members 9 and Il arespaced from the level of the water and 15 their purpose is to divert and direct the dirtladened air as it is discharged from the pipe 8. The shield 9 extends slightly below the baille l I inV order that the dirt-ladened air will be directed into the water for depositing the dirt before the 90 air is deected upwardly towards the top of the container. Becauseiof the increased area provided by the passage between the members 9 and Il, the pressure of the air will be here reduced while at the same time the dirt-ladened air will be directed effectively towards the water and over an increased area thereof for depositing the dirt which will be held by the water.

The screen 1, which might be replaced -by a perforated plate. will prevent the escape of dirt upwardly.

The restricted throat member I3 has screwthreaded connection with the upper end of pipe 8 and has screw-threaded connection also with the .lower end of the attachment Il into which 86 it extends so as to form part of an injector.

The attachment Il has the screw-threaded opening Il for connection of an air pressure supply pipe lla, and from this opening Il there extends the tube I8 in spaced relationwithin the 40 attachment Il and terminatesin the'iniecto'r nozzle I1 in co-operation with `the restricted throat member I3. The nozzle l'l terminates at a distance .from the spreading inlet of the throat in member I3 so as to force into and through 45 the member I3 the dirt-ladened air which is drawn linto the chamber of the attachment Il through the upper end thereof, according to the present illustration. y v

At the upperA end of the. attachment I4 there-5o is screw-threaded connection forthe angularmember il to which is connected the exible hose I carrying lthe familiar tool 20. In the present form of illusizratiomthe arms of member Il areat aboutforty-nvedegreestoeach'other ggf to permitan observation 'of the dirt as it is drawn past this point. The window 2| is of spherical form and is secured in place by means of a screw ring.

At the turn in the member I8 there is a rib d8a which serves as a bafiie in diverting the dirtladened air so as to deilect it against the glass window 2l. In this way, the dirt will be caused to swirl about this elbow and this will enable the dirt to be viewed through the window 2i. Thus the presence and approximate quantity of dirt can be readily determined at any time during operation of the device.

'I'he opening which is closed by screw plug 22 permits access to the parts for assembly and inspection of the same, and the opening that is closed by screw plug 23 may be used .for connection of the member i8 if so desired instead of at the point indicated in the drawing. In case of such change, the opening in the` upper end of the attachment It would be closed.

The average air pressure found today in the automobile service garage is about v150 pounds which,with my device, will aord very strong suction. In fact, actual experience has shown that it is possible to clean much more thoroughly with my present device than with other devices now on the market.

Furthermore, the use of my device does not involve the use of any mechanical or electrical motive means: the suction is supplied entirely by employs a cloth bag to receive and hold the dirt.

4Other' advantages will readily suggest themselvesto those who are familiar with the art to which" this invention relates.

In a device of the class described, a single form oi attachment having an inlet connection for entrance of a fluid under pressure. said inlet.

continuing in the form of -atube having an in- ;ector nozzle within the attachment, said attachment having formed therein an intake connection through which dirt-ladened air may be drawn at a point substantially to the rear of the nozzle, said attachment having a restricted discharge opening through which the dirt-ladened air may be expelled in a direct manner by the force of the uid pressure from the nozzle, and means provided' upon the lower end of the attachment for connecting the same yin an upright position upon a container for discharging the dirt-ladened air thereinto.

HARRY A. JEFFERY. 

